Secure wiping/shredding of free disk space with many methods
Open source disk encryption with strong security for the Paranoid
Distro Penetrasing Live System Burn to USB Flash Disk & Run.
A library for secure deleting data on-the-fly
Encrypted volumes through command line
Fast Wipe
High Security Encrypting File System
FUSE File system powered by secret sharing scheme
Information Hiding Modification for EXT2
Liberté Linux: Mission-critical stealth communication
A free "on-the-fly" transparent disk encryption program for PC & PDAs.